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test.go
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149 lines (113 loc) · 3.44 KB
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package main
// import (
// "fmt"
// "log"
// "strings"
// "github.com/go-playground/validator/v10"
// "github.com/gofiber/fiber/v2"
// )
// type (
// User struct {
// Name string `validate:"required,min=5,max=20"` // Required field, min 5 char long max 20
// Age int `validate:"required,teener"` // Required field, and client needs to implement our 'teener' tag format which we'll see later
// }
// ErrorResponse struct {
// Error bool
// FailedField string
// Tag string
// Value interface{}
// }
// XValidator struct {
// validator *validator.Validate
// }
// GlobalErrorHandlerResp struct {
// Success bool `json:"success"`
// Message string `json:"message"`
// }
// )
// // This is the validator instance
// // for more information see: https://github.com/go-playground/validator
// var validate = validator.New()
// func (v XValidator) Validate(data interface{}) []ErrorResponse {
// validationErrors := []ErrorResponse{}
// errs := validate.Struct(data)
// if errs != nil {
// for _, err := range errs.(validator.ValidationErrors) {
// // In this case data object is actually holding the User struct
// var elem ErrorResponse
// elem.FailedField = err.Field() // Export struct field name
// elem.Tag = err.Tag() // Export struct tag
// elem.Value = err.Value() // Export field value
// elem.Error = true
// validationErrors = append(validationErrors, elem)
// }
// }
// return validationErrors
// }
// func main() {
// myValidator := &XValidator{
// validator: validate,
// }
// app := fiber.New(fiber.Config{
// // Global custom error handler
// ErrorHandler: func(c *fiber.Ctx, err error) error {
// return c.Status(fiber.StatusBadRequest).JSON(GlobalErrorHandlerResp{
// Success: false,
// Message: err.Error(),
// })
// },
// })
// // Custom struct validation tag format
// myValidator.validator.RegisterValidation("teener", func(fl validator.FieldLevel) bool {
// // User.Age needs to fit our needs, 12-18 years old.
// return fl.Field().Int() >= 12 && fl.Field().Int() <= 18
// })
// app.Get("/", func(c *fiber.Ctx) error {
// user := &User{
// Name: c.Query("name"),
// Age: c.QueryInt("age"),
// }
// // Validation
// if errs := myValidator.Validate(user); len(errs) > 0 && errs[0].Error {
// errMsgs := make([]string, 0)
// for _, err := range errs {
// errMsgs = append(errMsgs, fmt.Sprintf(
// "[%s]: '%v' | Needs to implement '%s'",
// err.FailedField,
// err.Value,
// err.Tag,
// ))
// }
// return &fiber.Error{
// Code: fiber.ErrBadRequest.Code,
// Message: strings.Join(errMsgs, " and "),
// }
// }
// // Logic, validated with success
// return c.SendString("Hello, World!")
// })
// log.Fatal(app.Listen("localhost:3000"))
// }
// /**
// OUTPUT
// [1]
// Request:
// GET http://127.0.0.1:3000/
// Response:
// {"success":false,"message":"[Name]: '' | Needs to implement 'required' and [Age]: '0' | Needs to implement 'required'"}
// [2]
// Request:
// GET http://127.0.0.1:3000/?name=efdal&age=9
// Response:
// {"success":false,"message":"[Age]: '9' | Needs to implement 'teener'"}
// [3]
// Request:
// GET http://127.0.0.1:3000/?name=efdal&age=
// Response:
// {"success":false,"message":"[Age]: '0' | Needs to implement 'required'"}
// [4]
// Request:
// GET http://127.0.0.1:3000/?name=efdal&age=18
// Response:
// Hello, World!
// **/